A particle of mass m falls from rest through a resistive medium having resistive force, F=-k v, where v is the velocity of the particle and k is a…

A particle of mass $\displaystyle m$ falls from rest through a resistive medium having resistive force, $\displaystyle F=-k v$, where $\displaystyle v$ is the velocity of the particle and $\displaystyle k$ is a constant. Which of the following graphs represents velocity $\displaystyle (v)$ versus time $\displaystyle (t)$ ?